Science Advances

Supplementary Materials

The PDF file includes:

  • Fig. S1. Schematics illustrating temporal and spatial scale interactions responsible for tornado generation in the SGP and the associated physical processes.
  • Fig. S2. Seasonal cycle and year-to-year variability of the number of tornadoes over the SGP region.
  • Fig. S3. Properties of the PNA teleconnection pattern.
  • Fig. S4. Significance test for regression patterns.
  • Fig. S5. Correlation coefficients between anomalies of tornado frequency, large-scale atmospheric variables, and mesoscale variables associated with tornadic supercell thunderstorms in each month from April to June.
  • Fig. S6. Scatterplot of tornado frequencies for April and May for the period 1954–2010 as a function of CAPE.
  • Fig. S7. Large-scale patterns controlling the tornado activity in the SGP in March and the seasonal cycle of the low-level jet.
  • Fig. S8. Influence of PNA teleconnection on kinematic properties of the tornadic environment.
  • Fig. S9. Mesoscale activity during strong and weak April tornado years.
  • Legend for table S1

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Other Supplementary Material for this manuscript includes the following:

  • Table S1 (Microsoft Excel format). Details of the AMIP models used in this study.

Files in this Data Supplement: